cell signaling

This term describes a complex biochemical communication network. It is used almost exclusively in scientific, medical, and academic registers to explain how cells coordinate behavior, such as growth, differentiation, and apoptosis. It encompasses various mechanisms, including endocrine, paracrine, and autocrine signaling.

As a technical term referring to a biological process, it is treated as an uncountable noun. It does not have a plural form in standard scientific usage, as it refers to the general phenomenon of communication rather than individual instances of a signal.